I paid my usual visit to Reddit and found this:
Using my super-seekrit domain registrar powers vested in me by the authority of my employer, I found that the domain record had been updated today…
Domain Name: REDDIT.COM
Registrar: DSTR ACQUISITION PA I, LLC DBA DOMAINBANK.COM
Whois Server: rs.domainbank.net
Referral URL: http://www.domainbank.net
Name Server: NS2.ADVANCEMAGS.COM
Name Server: NS3.ADVANCEMAGS.COM
Name Server: NS4.ADVANCEPUBS.NET
RRP Status: REGISTRAR-LOCK
Status: clientDeleteProhibited
Status: clientUpdateProhibited
Status: clientTransferProhibited
Updated Date: 13-Dec-2006
Creation Date: 29-Apr-2005
Expiration Date: 29-Apr-2008
Somebody did something today, and that something caused reddit.com to no longer resolve. Hopefully this will get resolved soon.